Buffing or polishing wheel



De@ 31, 1940- L w. Mac-FARLAND ErAL 2,226,524

Filed N ov. 28, 1959 4 Sheets-Sheet 1 lNVENTORS Lauvn WMaEFil/IandETEphEn Kruglmcf ATTORNEY l Des. 31, 1940. 2 1 w. MaFARLAND Em 2,226,624

BUFFING OR POLISHING WHEEL Filed Nov. 28, 1959 4 Sheets-Sheet 2INVENTORS Dec. 31, 1940. L. w. MacFARLAND ETAI. 2,226,624

` BUFFING OR POLISHING WHEEL Filed NOV. 28, 1939 4 Sheets-S1168?l 5lNvENToRs Mmmm Dem-31, 1940. L w, MacFARLAND E1-AL 2,226,624

BUFFING OR POLISHING WHEEL 4 Sheets-Sheet 4 Filed Nov. 28, 1959INVENTORE l Lauvgni MEFWIBQU imphsn Kgliqlmf V ATTORNEYy Patented Dec.3l, 1,940

UNITED STATES BUFFING R POLISHING WHEEL Laurens W. MacFarland, OldGreenwich, Conn., and Stephen Krugloi, New York, N. Y.; said Krugloffassgnor to said MacFarland 4Application November 2s, 1939, serial No.306,478

16 Claims.

This invention relates to improvements in bufflng or polishing wheelsand in the construction of the individual sections of sectional bufingwheels, in the construction of individual segments forming suchsections, and in the method of forming such segments.

One object of our invention is to provide an improved bufilng wheel, orwheel section, having improved means for the attachment of a plu-Arality of bufling segments or members.

Another object of this invention is to provide a plurality of rings ordiscs each having a series of pins or studs extending in an axialdirection and spaced circumferentially around the ring in proximity toits outer peripheral edge, and a series of sockets or holes arranged instaggered relation to said pins or studs and adapted to receive the endsof pins or studs on an adjacent ring.

Still another object is to provide a buflng section comprisingperforated buing members and axially projecting pins extending throughsaid perforations to center the said members, and the pins of adjacentsections being arranged in staggered relation to each other so as todispose the buing members in adjacent sections in such` manner as todistribute the material of said members uniformly throughout theperipheral surface of the bui.

With these and other objects in view, the in- 3l@ vention consists inthe novel construction and arrangement of parts hereinafter described,illustrated in the accompanying drawings, and particularly pointed outin the appended claims, it being understood that various changes in the3g form and constructional details may be made without departing fromthe spirit of the invention or sacrificing any of the advantagesthereof.

In the drawings:

Fig. 1 is a side elevation of a sectional buing wheel, mounted upon aspindle, and shown partly in section;

Fig. 2 is a side view showing `the assembly of the buliing segments inpart of one section of a bufiing wheel;

Fig 3 is a similar view showing the disposition of the segments when inoperation;

Fig. 4 is a view of the outer peripheral edge of one of the segmentslooking in the direction of the arrows LA! Fig. 3;

Fig. 5 is a view of one of the bufng segments before folding;

Fig. 6 is a view of the folded segment ready for assembly;

Fig. 'I is an enlarged detail section on the line '1 -'l of Fig. 23

Figs. 8 to 13 inclusive show a modified form of the invention; Fig. 8being a View corresponding to Fig. 5, but showing a modified form ofbuiiing member;

Fig. 9 is a side view ofthe same in folded posi- 5 tion;

Fig. 10 is an edge view of the member;

Fig. 11 is a view showing one of the segments mounted on a retainingcore ring;

Fig. 12 is a view corresponding to Fig. 3, but 10 showing a modifiedform of builing elements and attaching means;

Fig. 13 is a side View of yparts of the supporting means for the bufiingmembers;

Fig. 14 shows a strip of multi-ply fabric from 15 which bufilng segmentsof modified form lare produced;

Figs. 15 to 18 inclusive show other forms of buing segments, Figs. 15and' 16 being respectively side and edge views of a buiiing brush seg-20 ment; and Figs. 17 and 18 being corresponding .views of another form.

Referring to Figs. 1 to '1 inclusive, the wheel (Fig. 1) consists offive bufiing sections of similar construction, held between end platesI5, i6, 25

mounted upon the spindle I1, with a securing nut I8 in the well-knownmanner. The end plate i5 is formed on its inner face and in proximity toits outer peripheral edge with a series of axially projecting pins orstuds i9 spaced at equal dis- 30 tances apart and adapted to receive thebufling segments 20, which latter consist of multi-ply discs, Fig. 5, offabric or other suitable material, which may be obtained by cutting thecenters from larger discs in the manufacture of hurling sections havinga central opening equal to the dimensions of the disc members 20. Theplies 2l in superimposed relation are provided with an inner member orcore 22 of stringor other reinforcing material over which the plies arefolded as shown at Fig. 6, and the member thus formed is provided with aline of stitching at 23 to enclose and retain the reinforcing core 22,and the plies are perforated at 24, 25, and are slit at 26. The bufiingmember is then ready for assembly and is placed upon adjacent pins IB asshown at Fig. 2, the hurling members 20 being arranged in overlappingrelation as shown. When a multisection wheel, as shown at Fig. 1, isrequired, discs or rings 21 are employed, see Fig. 7. Each disc or 50ring 21 is provided with holes 28 for engagement upon reduced ends 29forming part of the studs or pins I9, and these ends 29 may be slottedat 3U in :order to provide a certain amount of spring action whereby thering 21 is held in assembled 55 relation to the disc l5. Each disc orring 2l is also formed with pins or studs 3l similar to the pins orstuds I9, but arranged equidistant between the holes 28 so that inassembled position the pins or studs I9 are in staggered relation to thepins or studs 3l. The studs I9 and holes 28 may be similarly disposed onthe end discs I5, IS and on the intermediate rings 21, so that thesediscs and rings are interchangeable and discs such as I5, I6 may beemployed in lieu of any of the rings 21 when so desired. Similar buingsegments 28 are assembled upon the projecting pins or studs 3l, and byreason of the staggered relationship of the pins or studs I9, 3|, abovereferred to, a uniform distribution of the material of the buiilngsegments is insured throughout the peripheral surface of the sectionalwheel. When the desired number of sections have been assembled,projecting ends corresponding to the ends 29 are engaged by perforationsin the end plate I6, and when the nut I8 is screwed upon the spindle I'lthe parts of the bufiing wheel are retained in properly assembledposition..

When the bui section is in use the overlapping portions of the segments20 (Fig, 2) move outwardly under centrifugal force and the buingmaterial then assumes the form shown at Fig. 3. This outward movement isa result of the slits 26 and oi' the mounting of the segmentswithoutaxial compression between adjacent plates or rings.

Referring to Figs. 8 to 13 inclusive, the segmental buiiing elements inthis case consist of a v` `plurality of, superimposed plies 36 of fabricor other material that may be cut from the center of a larger buingdisc, or may consist of a, discarded buing disc that hasibeen worn downto a diameter too small for satisfactory use.

The member comprising the plies 36 is perfor- 'ated at 31, 38 and isthen folded along a line 39 passing centrally through both perforations.A line of stitches 40 is then provided between said perforations so asto form an open-ended loop 42 for the reception of a retaining wire orcore 4|.

For the assembly of these bi1-fling members an end plate 49corresponding to the end plate I5 is provided with an annular series ofaxially projecting pins 50 equidistantly arranged in proximity to theouter periphery of the plate. The inner faces of these pins 58 areengaged by the core wire or springA ring member 4I which has hooked ends52 for engagement over one of said pins, and said spring member 4Ipreferably engages grooves formed in the inner faces of the pins 50.'Ihe spring member 4I is adapted to be threaded through the loops 42(Fig. 10) of the buil-lng members which are thus assembled inoverlapping relation. By the use of intermediate discs or rings 55having on one side face axially projecting pins 56 similar-to the saidpins 50 and having on the opposite side Aface a similar series ofaxially projecting pins 57 arranged in staggered rela-tion to the pins56. When the bul segment shown at Fig. 11 is in use, the projecting sideportions 58 tend to move outwardly by centrifugal force so that eachmember when in operating position at high speed assumes the formsubstantially as shown at Fig. 12.

Buiiing segments for use in accordance with this invention may beproduced Without folding` and Fig. 14 shows a multi-ply strip 32 of biasfabric or other suitable material which is perforated at 33 along bothedges and is cut along inclined lines 34 so as to produce wedge-shapedblanks 35 with perforations suitably spaced for engagement by the pinsI8, Fig. 2.

Figs. 15 to 18 inclusive show buing elements in the form of Tampicobrushes 63, 64 or other fibrous bunches sol formed that they may beconveniently applied to the said pins I9. In the form shown at Figs. 15and 16 the brush member 53 has an eye 88 while the member 54 shown atFigs. 17 and 18 has two eyes 6I, 82 spaced to suit the spacing of thesaid pins I9. These brush members 83, 88 are made by lacing or stitchingthe bristles or bres together at 65, and cement or other hardeningcomposition may be employed in forming the eyes 69, 6 I, 62.

It has been heretofore proposed to provide means whereby cooling orVentilating air may be passed inwardly in an axial direction through thebody of a bufiing wheel and from thence outwardly in a radial directionbetween bufiing sections or segments, and although such ventilation orair cooling is not an essential part of the present invention, the endplates I5, I6 and 49 may all vbe provided with air holes 59, so -thatair may pass l inwardly into the interior of the wheel and the form andarrangement of the pins or studs I9, 3l, 5I), and 5l, are such thatspaces are provided for the free passage of Iair outwardly in a radialdirection between adjacent bung sections, or between adjacent segments,so that effective ventilation or cooling is insured.

Although the drawings and the above specication disclose the best modesin which we have contemplated embodying our invention, we desire to bein no way limited to the details of such disclosure, for in the furtherpractical application of our invention many changes in form andconstruction may be made as circumstances require n or experiencesuggests, without departing from the spirit of the invention within thescope of the appended claims.

What We claim is:

l. A sectional bung wheel comprising an end plate for mounting andcentering the buiing section, studs mounted on said plate andcircumferentially spaced from each other in close proximity to the outerperipheral edge of the plate, a plurality of buiiing' segments, meanswhereby the buflng segments are each anchored between two adjacentstuds, and means on the free ends of the studs for engaging an adjacentsection and for maintaining between the sections axial spacing to permitturning movement of the segments upon the studs.

2. A sectional buiiing wheel comprising ,an end plate for. mounting andcentering the bu'ng section, studs projecting axially from said plateand circumferentially spaced from each other in proximity to the outerperipheral edge of the plate, a plurality of bufng segments, openings atthe inner parts of the bung segments whereby such segments arepenetrated and anchored to the studs, and meanson the studs for engagingand centering an adjacent section and maintaining a predetermined axialdistance between the sections.

3. A sectional bufng wheel comprising an annular buiiing section havinga plurality of bung members of exible material, rings having axiallyprojecting studs spaced from each other in a circumferential directionfor anchoring the said buing members, and means for maintaining unifonnspacing between said rings for the accommodation of the builng membersto permit independent turning movement of the said members undercentrifugal force while the buff is in operation.

4. In a sectional buffing wheel, a bufIing section comprisingv aplurality of similar bufling members arranged circumferentially aroundthe section, metallic rings supporting and centering me section, aplurality of axially projecting anchoring and spacing studs secured toone of said rings and engaging the second ring to maintain the spacedrelation of such rings and to anchor the buiiing members without axialcompression, and holes in the said second member to receive the ends ofsaid studs.

5. A sectional buiing wheel comprising annular members for centering andsupporting the buffing sections, each buiiing section comprising acircumferential series of bufing segments, a circumferential series ofanchoring studs spaced from each other in proximity to the outerperipheral Aedge of a centering member, and spring members on said studsfor engaging an adjacent centering member.

6. A sectional builing wheel comprising rigid annular members forsupporting and centering fthe bumng sections', projecting studs formounting the bumng members upon the centering members, means on saidstuds for maintaining said centering members in spaced relation to eachother, and two spaced perforatins in each buiiing member penetrated bytwo adjacent studs to anchor each member in its section.

7. A sectional bung wheel comprising rigid annular members forsupporting and centering the sections, a plurality of bufiing segmentsin each section, axially projecting studs for mounting the bufngsegments upon the centering members, means on said studs for maintainingsaid centering Emembers in axially spaced relation to each other, andperforations in the bufng segments whereby the said studs penetrate andanchor the segments in the sections, the studs in adjacent sectionsbeing staggered in relation to each other to uniformly distribute thematerial in the buing sections throughout the circumference of thesectional wheel.

8. In a sectional bumng wheel, buing sections each comprising aplurality of circumferentially arranged bufiing members, a metalliccentering ring for said members, an annular series of spaced projectingstuds provided on the side face of the ring for anchoring the bufiingmembers, a

series of sockets in said ring for engaging the` studs on an adjacentring, the sockets and studs being arranged in staggered relation toeachother in each ring to align each stud in the assembled wheel inalignment with the stud in the second section therefrom, and meansindependent of the bun'ing members Vfor maintaining the spaced relationof the rings from each other in.

an axial direction to permit free turning movement of the buflingmembers upon their anchoring studs.

9. In a sectional bufling wheel, an annular buf--` ling section offlexible material comprising individual circumferentially arrangedportions, a pair of perforations in each portion, an annular series ofanchoring studs circumfercntially spaced from each other with twoadjacent studs penetrating the perforations of each buff portion,annular supporting and centering members carrying said studs, means formaintaining spaced relation between said annular members in an axialdirection to allow limited turning movement of the bufng portions uponthe studs, and means for insuring staggered relationship between thebufng portions in adjacent sections.

l0. In a sectional bulng wheel, an annular buii'ing section offlexiblematerial comprising a series of circumferentially arrangedsegments of bufing material, openings in the segments near,

tween the bufllng segments in adjacent sections.

11. A buing wheel section comprising an annular metallic member forsupporting andcentering the buff upon its spindle, an annular series ofstuds projecting in an axial direction from said annular member inproximity to its outer peripheral edge, and a plurality of buffingmembers forming the said section and being of substantiallysemi-circular form `and having twol perforationsl with a split extendingtherebetween,

.the perforations being adapted to receive two adjacent studs so thatthe member may turn upon said studs and the outer corners of the buffportions may swingoutwardly towards the periphery of the buffs to puckerthe material of the buff and provide a substantially uniformcircumferential buing surface.

12. In a buiilng' section, a plurality of bumng segments each comprisinga plurality of exible discs folded along a center line, a flexiblereenforcing core at the center part of the fold, a slit extendingcentrally at right-angles` to the said core, a perforation extendingthrough the material at each side of the slit, two axially projectingstuds spaced from each other in a circumferential direction for engagingsaid perforations to anchor the bufling member and permit limitedturning movement of said member under centrifugal force, and means forsupporting said studs upon the spindle.

13. A bumng segment for a buiiing wheel of the character describedcomprising a multi-ply structure of flexible bufng material folded alongits central line, reenforcing stitches extending along the central partof the fold, a split formed in the center part of the buff perpendicularto the fold, and two perforations located in proximity to the fold, forthe reception of two spaced anchoring studs.

14. A buiiing segment for a bufiing wheel of the character describedcomprising a multi-ply structure of flexible bumng material ofsubstantially circular form folded along its central line, reenforcingstitches parallel to the central part oif the fold, a strengthening coreenclosed by said stitches, a slit extending through the fold in thecenter part ofthe buff and perpendicular to the fold, and twoperforaticns located in proximity to the fold, one on each side of theslit, for the reception of anchoring studs.

`15. In a sectional builng wheel, a builln'g section comprising ametallic ring member, a series of axially projecting studs on said ring,an arcuate spring rod retained by said studs, and a plurality of'flexible bumng members anchored by said rod and spaced from each otherby said studs.

16. In a buing Wheel, an annular bufng sec tion comprising a pluralityof bung segments arranged eircumferentially around the section andfolded to form loops at their inner extremity, a retaining coreextending through said loops, a plurality o studs for retaining saidcore, a metallic ring carrying said studs, and means on said studs formaintaining the spaced relation between adjacent rings in an axialdirection to permit limited movement of the bufng segments upon theretaining core.

L. W. MACFARLAND. STEPHEN KRUGLOFF.

